Carrier 17EX User Manual

17EX

Externally Geared Centrifugal Liquid Chillers

50/60 Hz

1500 to 2250 Nominal Tons (5280 to 7910 kW)

Start-Up,Operation,andMaintenanceInstructions

SAFETY CONSIDERATIONS

Centrifugal liquid chillers are designed to provide safe and reliable service when operated within design speciﬁcations. When operating this equipment, use good judgment and safety precautions to avoid damage to equipment and property or injury to personnel.

Be sure you understand and follow the procedures and safety precautions contained in the chiller instructions as well as those listed in this guide.

DO NOT VENT refrigerant relief valves within a building. Outlet from rupture disc or relief valve must be vented outdoors in accordance with the latest edition of ASHRAE (American Society of Heating, Refrigeration, and Air Conditioning Engineers) 15. The accumulation of refrigerant in an enclosed space can displace oxygen and cause asphyxiation.

PROVIDE adequate ventilation in accordance with ASHRAE 15, especially for enclosed and low overhead spaces. Inhalation of high concentrations of vapor is harmful and may cause heart irregularities, unconsciousness, or death. Misuse can be fatal.Vaporisheavier than air and reduces the amount of oxygen available for breathing. Product causes eye and skin irritation. Decomposition products are hazardous.

DO NOT USE OXYGEN to purge lines or to pressurize a chiller for any purpose. Oxygen gas reacts violently with oil, grease, and other common substances.

NEVER EXCEED speciﬁed test pressures, VERIFY the allowable test pressure by checking the instruction literature and the design pressures on the equipment nameplate.

DO NOT USE air for leak testing. Use only refrigerant or dry nitrogen.

DO NOT VALVE OFF any safety device. BE SURE that all pressure relief devices are properly installed and

functioning before operating any machine.

DO NOT WELD OR FLAME CUT any refrigerant line or vessel until all refrigerant (liquid andvapor)hasbeenremovedfromchiller. Traces of vapor should be displaced with dry air or nitrogen and the work area should be well ventilated. Refrigerant in contact with

an open ﬂame produces toxic gases.

DO NOT USE eyebolts or eyebolt holes to rig chiller sections or the entire assembly.

DO NOT work on high-voltage equipment unless you are a qualiﬁed electrician.

DO NOTWORKON electrical components, including control panels, switches, starters, or oil heater until you are sure ALLPOWER IS OFF and no residual voltage can leak from capacitors or solidstate components.

LOCK OPENANDTAGelectrical circuits during servicing.IF WORK IS INTERRUPTED, conﬁrm that all circuits are deenergized before resuming work.

AVOID SPILLING liquid refrigerant on skin or getting it into the eyes. USE SAFETY GOGGLES. Wash any spills from the skin with soap and water .If any enters the eyes, IMMEDIATELYFLUSH EYES with water and consult a physician.

NEVER APPLY an open ﬂame or live steam to a refrigerant cylinder. Dangerous overpressure can result. When necessary to heat refrigerant, use only warm (110 F [43 C]) water.

DO NOT REUSE disposable (nonreturnable) cylinders or attempt to reﬁll them. It is DANGEROUS AND ILLEGAL. When cylinder is emptied, evacuate remaining gas pressure, loosen the collar and unscrew and discard the valve stem. DO NOT INCINERATE.

CHECK THE REFRIGERANT TYPE before adding refrigerant to the chiller.The introduction of the wrong refrigerant can cause damage or malfunction to this chiller.

Operation of this equipment with refrigerants other than those cited herein should comply withASHRAE-15 (latest edition). Contact Carrier for further information on use of this chiller with other refrigerants.

DO NOTATTEMPTTO REMOVE ﬁttings, covers,etc., while chiller is under pressure or while chiller is running. Be sure pressure is at 0 psig (0 kPa) before breaking any refrigerant connection.

CAREFULLY INSPECT all relief devices, rupture discs, and other relief devices AT LEAST ONCE A YEAR. If chiller operates in a corrosive atmosphere, inspect the devices at more frequent intervals.

DO NOT ATTEMPT TO REPAIR OR RECONDITION any relief device when corrosion or build-up of foreign material (rust, dirt, scale, etc.) is found within the valve body or mechanism. Replace the device.

DO NOT install relief devices in series or backwards. USE CARE when working near or in line with a compressed spring.

Sudden release of the spring can cause it and objects in its path to act as projectiles.

RUN WATERPUMPS when removing, transferring, or charging refrigerant.

DO NOT STEP on refrigerant lines. Broken lines can whip about and cause personal injury.

DO NOT climb over a chiller. Use platform, catwalk, or staging. Follow safe practices when using ladders.

USE MECHANICAL EQUIPMENT (crane, hoist, etc.) to lift or move inspection covers or other heavy components. Even if components are light, use such equipment when there is a risk of slipping or losing your balance.

BE AWARE that certain automatic start arrangements CAN ENGAGE THE STARTER. Open the disconnect ahead of the starter in addition to shutting off the machine or pump.

USE only repair or replacement parts that meet the code requirements of the original equipment.

DO NOTVENT OR DRAIN waterboxes containingindustrial brines, liquid, gases, or semisolids without permission of your process control group.

DO NOT LOOSEN waterbox cover bolts until the waterbox has been completely drained.

DOUBLE-CHECK that coupling nut wrenches, dial indicators, or other items have been removed before rotating any shafts.

DO NOT LOOSEN a packing gland nut before checking that the nut has a positive thread engagement.

PERIODICALLY INSPECT all valves, ﬁttings, and piping for corrosion, rust, leaks, or damage.

PROVIDE A DRAIN connection in the vent line near each pressure relief device to prevent a build-up of condensate or rain water.

Manufacturer reserves the right to discontinue, or change at any time, speciﬁcations or designs without notice and without incurring obligations.

Book 2 Tab 5d

PC 211 Catalog No. 531-721 Printed in U.S.A. Form 17EX-1SS Pg 1 7-97 Replaces: New

CONTENTS

Page

SAFETY CONSIDERATIONS ......................1

INTRODUCTION ABBREVIATIONS 17EX CHILLER FAMILIARIZATION

Chiller Identiﬁcation Label System Components Cooler Condenser Compressor Control Center Motor Starter (Purchased Separately) Economizer/Storage Vessel

REFRIGERATION CYCLE OIL COOLING CYCLE

Compressor Oil Cooling External Gear Oil Cooling LUBRICATION CYCLE Compressor Lubrication Cycle External Gear Lubrication Cycle

STARTERS CONTROLS

Deﬁnitions

........................................5

................................5

...............................5

.................5

.......................5

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....................................5

...................................5

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.......................5-8

...........................8

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..........................8,9

...................8

..................9

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.................................11-43

....................................11

• ANALOG SIGNAL

• DIGITAL SIGNAL

• VOLATILE MEMORY

General PIC System Components

......................................11

.......................12

• PROCESSOR/SENSOR INPUT/OUTPUT MODULE (PSIO)

• STARTER MANAGEMENT MODULE (SMM)

• LOCAL INTERFACE DEVICE (LID)

• SIX-PACK RELAY BOARD

• EIGHT-INPUT MODULES

• FOUR-IN/TWO-OUT (4-IN/2-OUT) MODULE

• OIL HEATER CONTACTOR (1C)

• COMPRESSOR OIL PUMP CONTACTOR (2C) AND GEAR

OIL PUMP CONTACTOR (5C)

• HOT GAS BYPASS CONTACTOR RELAY (3C) (Optional)

• OIL AUXILIARY RELAY (4C)

• CONTROL TRANSFORMERS (T1-T4)

• CONTROL AND OIL HEATER VOLTAGE

SELECTOR (S1)

• OIL DIFFERENTIAL PRESSURE/POWER SUPPLY

MODULE

LID Operation and Menus

.......................16

• GENERAL

• ALARMS AND ALERTS

• LID DEFAULT SCREEN MENU ITEMS

• MENU STRUCTURE

• TO VIEW OR CHANGE POINT STATUS

• OVERRIDE OPERATIONS

• TO VIEW OR CHANGE TIME SCHEDULE OPERATION

• TO VIEW AND CHANGE SET POINTS

• SERVICE OPERATION

PIC System Functions

..........................32

• CAPACITY CONTROL

• ENTERING CHILLED WATER CONTROL

• DEADBAND

• PROPORTIONAL BANDS AND GAIN

• DEMAND LIMITING

• CHILLER TIMERS

• OCCUPANCY SCHEDULE

Safety Controls

...............................33

• SHUNT TRIP

Default Screen Freeze .........................33

Auxiliary Compressor Oil Pump Control Auxiliary Gear Oil Pump Control Shaft Seal Oil Control Ramp Loading Control Capacity Override High Discharge Temperature Control Oil Sump Temperature Control Oil Cooler Remote Start/Stop Controls Spare Safety Inputs Spare Alarm Contacts Condenser Pump Control Condenser Freeze Prevention Tower-Fan Relay Auto. Restart After Power Failure Water/Brine Reset Demand Limit Control, Option (Requires Optional

8-Input Module) Surge Prevention Algorithm Surge Protection Lead/Lag Control

....................................36

..........................33

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.............................35

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..........33

................33

.............35

................36

• COMMON POINT SENSOR INSTALLATION

• CHILLER COMMUNICATION WIRING

• LEAD/LAG OPERATION

• FAULTED CHILLER OPERATION

• LOAD BALANCING

• AUTO. RESTART AFTER POWER FAILURE

Ice Build Control

..............................40

• ICE BUILD INITIATION

• START-UP/RECYCLE OPERATION

• TEMPERATURE CONTROL DURING ICE BUILD

• TERMINATION OF ICE BUILD

• RETURN TO NON-ICE BUILD OPERATIONS

Attach to Network Device Control

...............41

• ATTACHING TO OTHER CCN MODULES

Service Operation

.............................42

• TO ACCESS THE SERVICE SCREENS

• TO LOG OFF

• HOLIDAY SCHEDULING

START-UP/SHUTDOWN/RECYCLE SEQUENCE Local Start-Up Shutdown Sequence Automatic Soft Stop Amps Threshold Chilled Water Recycle Mode Safety Shutdown

BEFORE INITIAL START-UP Job Data Required Equipment Required Using the Economizer/Storage Vessel and Pumpout

System Remove Shipping Packaging

................................43

...........................44

............44

....................44

..............................45

...................45-57

............................45

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...................45

...43-45

• MOTOR

• EXTERNAL GEAR

Motor Electrical Connection Motor Auxiliary Devices Open Oil Circuit Valves Tighten All Gasketed Joints and Guide Vane

Shaft Packing Check Chiller Tightness Refrigerant Tracer Leak Test the Chiller Standing Vacuum Test Chiller Dehydration

...............................46

.............................46

...........................46

............................49

....................45

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.........................49

CONTENTS

Page

Inspect Water Piping ..........................50

Check Optional Pumpout Compressor Water

Piping Check Relief Devices Inspect Wiring

....................................50

..........................50

................................50

• CHECK INSULATION RESISTANCE

Motor Pre-Start Checks External Gear Pre-Start Checks Carrier Comfort Network Interface Check Starter

.................................53

........................51

.................51

...............53

• MECHANICAL STARTERS

• SOLID-STATE STARTERS

Compressor Oil Charge Power Up the Controls and

Check the Compressor Oil Heater

........................54

.............54

• SOFTWARE VERSION

Set Up Chiller Control Conﬁguration Input the Design Set Points Input the Local Occupied Schedule

(OCCPC01S)

Input Service Conﬁgurations

................................54

.....................54

....................54

.............54

• PASSWORD

• INPUT TIME AND DATE

• CHANGE LID CONFIGURATION IF NECESSARY

• MODIFY CONTROLLER IDENTIFICATION IF

NECESSARY

• INPUT EQUIPMENT SERVICE PARAMETERS IF

NECESSARY

• MODIFY EQUIPMENT CONFIGURATION IF

NECESSARY

• CHECK VOLTAGE SUPPLY

• PERFORM AN AUTOMATED CONTROL TEST

Check Pumpout System Controls and Optional

Pumpout Compressor High Altitude Locations Charge Refrigerant Into Chiller

........................56

........................57

..................57

• TRIMMING REFRIGERANT CHARGE

INITIAL START-UP Preparation Manual Operation of the Guide Vanes Dry Run to Test Start-Up Sequence Check Motor Rotation

...........................57-62

..................................57

............58

..............58

.........................58

• INITIAL MOTOR START-UP

Disc Coupling Installation and Alignment

.........59

• IMPORTANT INFORMATION

Check Oil Pressure and Compressor Stop Calibrate Motor Current Demand Setting To Prevent Accidental Start-Up Hot Alignment Check Doweling Check Chiller Operating Condition Instruct the Operator

....................................61

.........................61

..........................62

..................61

...............61

........61

..........61

• COOLER-CONDENSER

• ECONOMIZER/STORAGE VESSEL

• PUMPOUT SYSTEM

• COMPRESSOR ASSEMBLY

• COMPRESSOR LUBRICATION SYSTEM

EXTERNAL GEAR LUBRICATION SYSTEM

• CONTROL SYSTEM

• AUXILIARY EQUIPMENT

• CHILLER CYCLES

• MAINTENANCE

• SAFETY DEVICES AND PROCEDURES

• CHECK OPERATOR KNOWLEDGE

• THIS MANUAL

OPERATING INSTRUCTIONS Operator Duties

...............................62

..................62,63

Prepare the Chiller for Start-Up .................62

Starting the Chiller Check the Running System Stopping the Chiller After Limited Shutdown Extended Shutdown After Extended Shutdown Cold Weather Operation Manual Guide Vane Operation Refrigeration Log

PUMPOUT AND REFRIGERANT TRANSFER

PROCEDURES Preparation Operating the Optional Pumpout

Compressor

..................................63

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............................63-67

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• READING REFRIGERANT PRESSURES

Transferring Refrigerant into the

Economizer/Storage Vessel Transferring Refrigerant into

the Cooler/Condenser/Compressor Section Return Chiller to Normal Operating

Conditions GENERAL MAINTENANCE

Refrigerant Properties Adding Refrigerant Removing Refrigerant Adjusting the Refrigerant Charge Refrigerant Leak Testing Leak Rate Test After Service, Repair, or Major Leak

.................................67

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.....67

....................67-75

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................67

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.........67

• REFRIGERANT TRACER

• TO PRESSURIZE WITH DRY NITROGEN

Repair the Leak, Retest, and Apply

Standing Vacuum Test Checking Guide Vane Linkage Contact Seal Maintenance

.......................68

..................68

......................68

• SEAL DISASSEMBLY

• SEAL REASSEMBLY

Chiller Alignment

.............................71

• ALIGNMENT METHODS

• PRELIMINARY ALIGNMENT

• NEAR FINAL ALIGNMENT

• FINAL ALIGNMENT

• HOT ALIGNMENT CHECK

• DOWELING

WEEKLY MAINTENANCE Check the Lubrication System

SCHEDULED MAINTENANCE Service Ontime Inspect the Control Center Check Safety and Operating Controls Monthly Changing the Oil Filters

...............................76

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..................76-83

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.....76

........................76

• COMPRESSOR OIL FILTER

• EXTERNAL GEAR OIL FILTER

Oil Speciﬁcations Oil Changes

.............................77

..................................77

• COMPRESSOR OIL

• EXTERNAL GEAR OIL

• MOTOR SLEEVE BEARING AND PUMPOUT

COMPRESSOR OIL

Inspect Refrigerant Float System Inspect Relief Valves and Piping Coupling Maintenance Motor Maintenance

........................78

............................78

................78

• CLEANLINESS

• SLEEVE BEARINGS

CONTENTS (cont)

Page

Motor Handling/Rigging ........................81

Motor Storage External Gear Storage

................................81

.........................81

• SHORT-TERM STORAGE (Indoors)

• LONG-TERM STORAGE (Indoors)

• EXTENDED DOWNTIME

Compressor Bearing Maintenance External Gear Maintenance Inspect the Heat Exchanger Tubes

...............82

.....................82

...............82

• COOLER

• CONDENSER

Water Leaks Water Treatment Inspect the Starting Equipment Check Pressure Transducers Pumpout System Maintenance

..................................82

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.................83

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• OPTIONAL PUMPOUT COMPRESSOR OIL CHARGE

• PUMPOUT SAFETY CONTROL SETTINGS

Ordering Replacement Chiller Parts

..............83

• MOTOR REPLACEMENT PARTS

• EXTERNAL GEAR REPLACEMENT PARTS

TROUBLESHOOTING GUIDE Overview Checking the Display Messages Checking Temperature Sensors

....................................83

..................83-99

.................84

• RESISTANCE CHECK

• VOLTAGE DROP

• CHECK SENSOR ACCURACY

• DUAL TEMPERATURE SENSORS

Checking Pressure Transducers ................84

• OIL DIFFERENTIAL PRESSURE/POWER SUPPLY

MODULE CALIBRATION

• TROUBLESHOOTING TRANSDUCERS

• TRANSDUCER REPLACEMENT

Control Algorithms Checkout Procedure Control Test Control Modules

.................................85

..............................96

.........85

• RED LEDs

• GREEN LEDs

Notes on Module Operation Processor/Sensor Input/Output Module (PSIO)

....................96

....97

• INPUTS

• OUTPUTS

Starter Management Module (SMM)

..............97

• INPUTS

• OUTPUTS

Options Modules (8-Input) Four-In/Two-Out Module

.....................98

.......................98

• INPUTS

• OUTPUTS

Replacing Defective Processor Modules

.........98

• INSTALLATION OF NEW PSIO MODULE

PHYSICAL DATA AND WIRING SCHEMATICS INDEX

INITIAL START-UP CHECKLIST FOR 17EX

....................................115-120

EXTERNALLY GEARED CENTRIFUGAL LIQUID CHILLER

..........................CL-1 to CL-12

....99-114

INTRODUCTION

Before initial start-up of the 17EX unit, those involved in the start-up, operation, and maintenance should be thoroughly familiar with these instructions and other necessary job data. This book is outlined so that you may become familiar with the control system before performing start-up procedures. Procedures in this manual are arranged in the sequence required for proper chiller start-up and operation.

This unit uses a microprocessor controlled system. Do not short or jumper between terminations on circuit boards or modules; control or board failure may result.

Be aware of electrostatic discharge (static electricity) when handling or making contact with circuit boards or module connections. Always touch a chassis (grounded) part to dissipate body electrostatic charge before working inside the control center.

Use extreme care when handling tools near boards and when connecting or disconnecting terminal plugs. Circuit boards can easily be damaged. Always hold boards by the edges and avoid touching components and connections.

This equipment uses, and can radiate, radio frequency energy. If not installed and used in accordance with the instruction manual, it may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference, in which case the user, at his own expense, will be required to take whatever measures may be required to correct the interference.

Always store and transport replacement or defective boards in anti-static shipping bag.

ABBREVIATIONS

Frequently used abbreviations in this manual include:

CCN — Carrier Comfort Network CCW — Counterclockwise CHW — Chilled Water CHWR — Chilled Water Return CHWS — Chilled Water Supply CW — Clockwise ECW — Entering Chilled Water ECDW — Entering Condenser Water EMS — Energy Management System HGBP — Hot Gas Bypass I/O — Input/Output LCD — Liquid Crystal Display LCDW — Leaving Condenser Water LCW — Leaving Chilled Water LED — Light-Emitting Diode LID — Local Interface Device OLTA — Overload Trip Amps PIC — Product Integrated Control PSIO — Processor Sensor Input/

Output Module RLA — Rated Load Amps SCR — Silicon Control Rectiﬁer SMM — Starter Management Module TXV — Thermostatic Expansion Valve

17EX CHILLER FAMILIARIZATION

Chiller Identiﬁcation Label (Fig. 1) —

tiﬁcation label is located on the right side of the chiller control center panel. The label contains information on model number, refrigerant charge, rated voltage, etc.

The iden-

System Components (Fig. 2) — The components

include the cooler and condenser heat exchangers in separate vessels, compressor,compressorandgear lubrication packages, control center,speedincreasereconomizer/storage vessel, motor, and starter. The compressor drive consists of an external gear (speed increaser) and an electric motor. All connections from pressure vessels have external threads to enable each component to be pressure tested with a threaded pipe cap during factory assembly.

Cooler — This vessel (also known as the evaporator) is

located underneath the condenser, next to the economizer/ storage vessel. The cooler is maintained at lower temperature and pressure so that evaporating refrigerant can remove heat from water ﬂowing through its internal tubes.

Condenser — The condenser operates at a higher tem-

perature and pressure than the cooler and has water ﬂowing through its internal tubes in order to remove heat from the refrigerant.

Compressor — This component maintains system tem-

perature and pressure differences and moves the heatcarrying refrigerant from the cooler to the condenser.

Control Center — The control center is the user inter-

face for controlling the chiller and regulates the chiller capacity as required to maintain proper leaving chilled water temperature. The control center:

• registers cooler, condenser, and lubricating system pressures

• shows chiller operating and alarm shutdown conditions

• records the total chiller operating hours and how many hours the chiller has been running

• sequences chiller start, stop, and recycle under microprocessor control

• provides access to other CCN (Carrier Comfort Network) devices

MotorStarter (Purchased Separately) — The starter

allows the proper start and disconnect of electrical energy for the compressor-motor, oil pump, oil heater, and control panels.

Economizer/Storage Vessel — During normal op-

eration, this vessel functions as an economizer,returning flash gas to the second stage of the compressor and increasing the efficiency of the refrigeration cycle. During periods of shutdown and service, the economizer/storage vessel can serve as a storage tank for the refrigerant.

REFRIGERATION CYCLE (Fig. 3)

The 17EX chiller can be used to chill either water or brine. The data in this book applies to either application. Applications using corrosive brines may require using special tubes, tubesheet, and waterbox materials which are special order items.

LEGEND NIH — Nozzle-In-Head *Any available cooler size can be combined with any available condenser size.

NOTE: For details on motor size designations, see below.

ASME

‘U’ STAMP

ARI (Air Conditioning

and Refrigeration

Institute)

PERFORMANCE

CERTIFIED

(60 Hz Only)

Fig. 1 — Model Number Identiﬁcation

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1—Condenser 2—Cooler Suction Pipe 3—Compressor Suction Elbow 4—Guide Vane Actuator 5—Condenser Discharge Pipe 6—Compressor Discharge Elbow 7—Two-Stage Compressor 8—Economizer Gas Line to Compressor

9—Compressor Housing Access Cover 10 — High-Speed Coupling (Hidden) 11 — External Gear (Speed Increaser) 12 — Low-Speed Coupling (Hidden) 13 — Open-Drive Compressor Motor 14 — Compressor Motor Terminal Box 15 — Low-Side Float Box Cover 16 — Gear Oil Pump 17 — Gear Oil Cooler/Filter 18 — Refrigerant Charging/Service Valve 19 — Refrigerant Liquid Line to Cooler 20 — Power Panel 21 — Oil Level Sight Glasses (2)

17EX WITH EXTERNAL GEAR (SPEED INCREASER)

Fig.2—Typical 17EX Chiller Components

LEGEND

22 — Oil Drain and Charging Valve 23 — Oil Heater (Hidden) 24 — Compressor Oil Pump 25 — Compressor Oil Cooler/Filter 26 — Local Interface Display Control Panel 27 — Cooler Relief Valves (Behind Compressor,

28 — Economizer Storage Vessel 29 — Economizer/Storage Vessel Relief Valves 30 — Pumpout Unit 31 — Cooler 32 — High Side Float Box Cover 33 — Cooler Waterbox Drain 34 — Take-Apart Connections 35 — Cooler Marine Waterbox 36 — Cooler Waterbox Vent 37 — Condenser Waterbox Drain 38 — Refrigerant Liquid Line to Economizer/

39 — Condenser Marine Waterbox 40 — Condenser Waterbox Vent

Hidden)

Storage Vessel

The chiller compressor continuously draws large quantities of refrigerant vapor from the cooler at a rate determined by the amount of guide vane opening. This compressor suction reduces the pressure within the cooler, allowing the liquid refrigerant to boil vigorously at a fairly low temperature (typically 38 to 42 F [3 to 6 C]).

The liquid refrigerant obtains the energy needed to vaporize by removing heat from the water or brine in the cooler tubes. The cold water or brine can then be used in air conditioning and/or other processes.

After removing heat from the water or brine, the refrigerant vapor enters the ﬁrst stage of the compressor, is compressed, and ﬂows into the compressor second stage. Here it is mixed with ﬂash-economizer gas and is further compressed.

Compression raises the refrigerant temperature above that of the water ﬂowing through the condenser tubes. When the warm (typically 98 to 102 F [37 to 40 C]) refrigerant vapor comes into contact with the condenser tubes, the relatively cool condensing water (typically 85 to 95 F [29 to 35 C]) removes some of the heat, and the vapor condenses into a liquid.

The liquid refrigerant passes through an oriﬁce into the FLASC chamber.The coolest condenser water ﬂows through the FLASC and allows a lower saturated temperature and pressure. Part of the entering liquid refrigerant will ﬂash to vapor once it has passed through the FLASC oriﬁce, thereby cooling the remaining liquid. The vapor is then recondensed by the condenser water ﬂowing through the FLASC chamber.

The subcooled liquid refrigerant drains into a high-side valve chamber that meters the refrigerant liquid into a ﬂash economizer chamber. Pressure in this chamber is intermediate between condenser and cooler pressures. At this lower pressure, some of the liquid refrigerant ﬂashes to gas, further cooling the remaining liquid. The ﬂash gas, having absorbed heat, is returned directly to the compressor second stage. Here it is mixed with discharge gas that is already compressed by the ﬁrst-stage impeller. Since the ﬂash gas has to pass through only half the compression cycle to reach condenser pressure, there is a savings in power.

The cooled liquid refrigerant in the economizer is metered through the low-side valve chamber, reducing the refrigerant pressure. Pressure in the cooler is lower than in the economizer. Some of the liquid ﬂashes as it passes through the low side ﬂoat valve. The cycle is now complete.

OIL COOLING CYCLE

Compressor Oil Cooling —

water cooled. Water ﬂow through the oil cooler is manually adjusted by a plug valve to maintain an operating temperature at the reservoir of approximately 145 F (63 C). An oil heater in the reservoir helps to prevent oil from being diluted by the refrigerant. The heater is controlled by the PIC (Product Integrated Control) and is energized when the oil temperature is outside the operating temperature range of 150 to 160 F (66 to 71 C).

The compressor oil is

External Gear Oil Cooling — The external gear oil

is also water cooled. Water ﬂow through the gear oil cooler is manually adjusted by a plug valve to maintain an operating temperature of approximately 130 F (54 C). If so equipped, an oil heater in the reservoir helps to maintain the oil temperature under cold ambient operating conditions. The heater is controlled by an internal thermostat.

LUBRICATION CYCLE

Compressor Lubrication Cycle (Refer to item numbers shown in Fig. 4) —

pump and oil reservoir are contained in the compressor base. Oil is pumped through an oil cooler and ﬁlter to remove heat and any foreign particles. A portion of the oil is then directed to the shaft-end bearing and the shaft seal. The balance of the oil lubricates the thrust and journal bearings and the thrust end seal. The bearing and transmission oil returns directly to the reservoir to complete the cycle. Contact-seal oil leakage, however,iscollected in an atmospheric ﬂoat chamber to be pumped back to the main reservoir as the oil accumulates.

Oil may be charged into the compressor oil reservoir (Item 8) through a charging valve (Item 6) which also functions as an oil drain. If there is refrigerant in the chiller, however, a hand pump will be required for charging at this connection.

An oil-charging elbow (Item 3) on the seal-oil return chamber allows oil to be added without pumping. The seal-oil return pump (Item 4) automatically transfers the oil to the main reservoir. Sight glasses (11) on the reservoir wall permit observation of the oil level.

Amotor-drivenoil pump (Item 10) discharges oil to an oil cooler/ﬁlter (Item 16) at a rate and pressure controlled by an oil regulator (Item 10). The differential oil pressure (bearing supply versus oil reservoir) is registered on the control panel.

Water ﬂow through the oil cooler is manually adjusted by a plug valve (Item 17) to maintain the oil at an operating temperature of approximately 145 F (63 C). During shutdown, the oil temperature is also maintained at 150 to 160 F (65 to 71 C) by an immersion heater (Item 7) in order to minimize absorption of refrigerant by the oil.

Upon leaving the cooler section of the oil cooler/ﬁlter, the oil is ﬁltered (Item 15) and a portion is directed to the sealend bearing (Item 1) and the shaft seal (Item 2). The remainder lubricates thrust (Item 14) and journal bearings (Item 12). Thrust bearing temperature is indicated on the PIC controls. Oil from both circuits returns by gravity to the reservoir.

The shaft seal of the open compressor drive must be kept full of lubrication oil, even when the chiller is not operating, to prevent loss of refrigerant.

If the chiller is not operating and the oil pump has not operated during the last 12 hours, the control system automatically runs the oil pump for one minute in order to keep the contact seal ﬁlled with oil.

IMPORTANT: If the control power is to be deenergized for more than one day,the chiller refrigerant should be pumped over to the economizer/storage vessel.

The compressor oil

LEGEND

TXV — Thermostatic Expansion Valve

*The FX compressor and the gear have a water cooled oil cooler.

Liquid Liquid/Vapor Vapor

Fig. 3 — Refrigeration, Cycle

External Gear Lubrication Cycle (Refer to Item numbers shown in Fig. 5) —

tained in the gear base.The external gear oil pump is mounted below the gear with the cooler/ﬁlter. Oil is pumped through an oil cooler/ﬁlter to remove heat and any foreign particles. A portion of the oil is directed to the gear bearings and gear mesh spray.The remainder is bypassed to the sump. The bearing and transmission oil returns directly to the reservoir to complete the cycle.

Oil may be charged into the external gear oil reservoir as described in the section, External Gear Pre-Start Checks, page 51. Observe the oil level in the oil level glass (Item 4) on the reservoir wall.

A motor driven oil pump (Item 10) discharges oil to the oil cooler/ﬁlter (Item 12). The pump has an internal pressure regulator to protect the pump in the event of an obstruction downstream. Water ﬂow through the oil cooler is manually adjusted by a plug valve (Item 14) to maintain the oil at an operating temperature of approximately 130 F (54 C).

Oil reservoir is con-

Upon leaving the cooler section (Item 13) of the oil cooler/ ﬁlter, the oil is ﬁltered (Item 11) and is directed to the pressure control valve (Item 7). Before entering the pressure control valve, the oil pressure (Item 16) and temperature (Item 8) are monitored by the PIC.

A portion of the oil then lubricates the gear bearings (Item 2). Another portion is directed through an oriﬁce (Item 5) to the gear mesh spray (Item 3) to lubricate the gear mesh (Item 1) during operation. Oil from both circuits returns by gravity to the reservoir.

STARTERS

All starters, whether supplied by Carrier or the customer, must meet Carrier Starter Speciﬁcation Z-375. This speciﬁcation can be obtained from a Carrier Sales Representative. The purpose of this speciﬁcation is to ensure the compatibility of the starter and the chiller.Many styles of compatible starters are available, including solid-state , auto-transformer, full-voltage, and, in the case of low-voltage main power supply, wye-delta closed transition.

COMPRESSOR OIL PRESSURE LEAVING FILTER LINE

JOURNAL BEARING

CHECK VALVE

OIL FILTER

OIL COOLER/ FILTER

PLUG VALVE

SHAFT DISPLACEMENT & BRG TEMP. CUTOUT CONNECTIONS

TO PIC CONTROLLER

MAIN OIL RESERVOIR

THRUST BEARING

COAST DOWN RESERVOIRS

SEAL-END BEARING

SHAFT SEAL

OIL CHARGING ELBOW

SIGHT GLASSES

OIL PUMP & PRESS. REGULATOR

TO POWER PANEL

OIL THERMISTOR

OIL HEATER

DRAIN & CHARGING VALVE

Fig. 4 — 17EX Compressor Lubrication Cycle

COMPRESSOR OIL SUCTION PRESSURE

PUMP, SEAL OIL RETURN

1—Gear Mesh 2—Bearings 3—Gear Mesh Spray 4—Oil Level Glass 5—Oriﬁce 6—Oil Supply Pressure

Transducer

7—Pressure Control Valve NOTE: The oil reservoir is at the base of the gear box.

Fig. 5 — External Gear Oil Lubrication Cycle (Plan View)

8—Oil Supply Temperature Thermistor

9—Oil Pump Motor 10 — Oil Pump and Pressure Regulator 11 — Oil Filter 12 — Oil Cooler/Filter 13 — Oil Cooler 14 — Plug Valve

CONTROLS

Deﬁnitions

ANALOG SIGNAL — An analog signal varies in proportion to the monitored source. It quantiﬁes values between operating limits. (Example: A temperature sensor is an analog device because its resistance changes in proportion to the temperature, generating many values.)

DIGIT ALSIGNAL— A digital (discrete) signal is a 2-position representation of the value of a monitored source. (Example: A switch is a digital device because it only indicates whether a value is above or below a set point or boundary by generating an on/off,high/low, or open/closed signal.)

VOLATILE MEMORY — Volatile memory is memory in- capable of being sustained if power is lost and subsequently restored.

The memories of the PSIO and LID modules are volatile. If the battery in a module is removed or damaged, all programming will be lost.

General — The 17EX externally geared open-drive cen-

trifugal liquid chiller contains a microprocessor-based control center that monitors and controls all operations of the chiller.The microprocessor control system matches the cooling capacity of the chiller to the cooling load while providing state-of-the-art chiller protection. The system controls cooling load within the set point plus the deadband by sensing the leaving chilled water or brine temperature and regulating the inlet guide vane via a mechanically linked actuator motor.The guide vane is a variable ﬂow prewhirl assembly that controls the refrigeration effect in the cooler by regulating the amount of refrigerant vapor ﬂow into the compressor.An increase in guide vane opening increases capacity.Adecrease in guide vane opening decreases capacity.Chiller protection is provided by the processor which monitors the digital and analog inputs and executes capacity overrides or safety shutdowns, if required.

PIC System Components — The Product Integrated

Control (PIC) is the control system on the chiller. See T able1. The PIC controls the operation of the chiller by monitoring all operating conditions. The PIC can diagnose a problem and let the operator know what the problem is and what to check. It promptly positions the guide vanes to maintain leaving chilled water temperature. It can interface with auxiliary equipment such as pumps and cooling tower fans to turn them on only when required. It continually checks all safeties to prevent any unsafe operating condition. It also regulates the oil heater while the compressor is off and the hot gas bypass valve, if installed. See Fig. 6-10 for the locations of sensors, transducers, and other devices controlled and/or monitored by the PIC system.

The PIC can be interfaced with the Carrier Comfort Network (CCN) if desired. It can communicate with other PIC-equipped chillers and other CCN devices.

The PIC consists of 4 modules housed inside one of 3 locations: the control center, the power panel, or the starter cabinet. The component names and the control voltage of each location are listed below (also see Table 1):

• control center

— all extra low-voltage wiring (24 v or less)

REAR

• power panel — 115 v control voltage — up to 600 v for oil pump power

• starter cabinet — chiller power wiring (per job requirement)

Table 1 — Major PIC Components and

Panel Locations*

PIC COMPONENT

Processor Sensor Input/Output Module

(PSIO)

Starter Management Module (SMM) Starter Cabinet Local Interface Device (LID) Control Center 6-Pack Relay Board Control Center 8-Input Modules (Optional) Control Center 4-In/2-Out Module Power Panel Oil Differential Pressure/Power Supply

Module

Oil Heater Contactor (1C) Power Panel Compressor Oil Pump Contactor (2C) Power Panel Gear Oil Pump Contactor (5C) Power Panel Hot Gas Bypass Relay (3C) (Optional) Power Panel Control Transformers (T1-T4) Power Panel Control and Oil Heater Voltage Selector (S1) Power Panel Temperature Sensors See Fig. 7 Pressure Transducers See Fig. 7

*See Fig. 6-10.

PANEL

LOCATION

Control Center

1—Gear Oil Pressure Sensor 2—Thrust Bearing Temperature and

Impeller Displacement Cable

3—Discharge Temperature Sensor 4—Guide Vane Conduit and Cable 5—High Pressure Cutout Switch

LEGEND

6—Compressor Oil Cooler

Solenoid Conduit

7—Oil Heater Conduit 8—Motor Space Heater Conduit 9—Gear Oil Temperature Sensor

10 — Motor High Temperature Switch Cable

11 — Motor Water Cooling Leak Detector 12 — Discharge Oil Pressure Sensor

TEWAC — Totally Enclosed Water-to-Air Cooled

Fig. 6 — 17EX Controls and Sensor Locations

Cable (TEWAC Motor Only)

LEGEND

13 — Condenser Pressure Transducer 14 — Condenser Entering Water

Temperature Sensor

15 — Condenser Entering and Leaving Water

Temperature Cable

16 — Oil Suction Pressure Sensor

17 — Oil Pump Conduit 18 — Oil Pump Sensor 19 — PIC Control Panel 20 — Condenser Leaving Water

Temperature Sensor

21 — Gear Oil Cooler Solenoid Conduit

LEGEND

22 — Cooler Temperature Cable 23 — Cooler Leaving Water Temperature Sensor 24 — Cooler Entering Water Temperature Sensor 25 — Cooler Pressure Sensor 26 — Refrigerant Charging Valve

Fig. 6 — 17EX Controls and Sensor Locations (cont)

Fig. 7 — Control Sensors (Temperature)

Fig. 8 — Control Sensors

(Pressure Transducer, Typical)

LEGEND

LID — Local Interface Device PIC — Product Integrated Controls PSIO — Processor Sensor Input/Output Module

1—Optional 8-Input Module for Spare Inputs to Control

Interface (One of Two Available)

2—PSIO 3—LID Input/Output Interface Panel Display 4—Oil Differential Pressure/Power Supply Module (Hidden) 5—LID Light (Hidden) 6—6-Pack Relay Board 7—Circuit Breakers (4)

Fig. 9 — Control Center (Front View);

Shown with Options Module

LEGEND

EQUIP GND — Equipment Ground GRD — Ground M—Motor TEWAC — Totally Enclosed Water-to-

Air Cooled

Fig. 10 — 17EX Chiller Power Panel and Controls Connections

PROCESSOR/SENSOR INPUT/OUTPUT MODULE (PSIO) — This module contains all the operating software needed to control the chiller. The 17EX uses 5 pressure transducers and 8 thermistors to sense pressures and temperatures. These inputs are connected to the PSIO module. The PSIO also provides outputs to the guide vane actuator, compressor and gear oil pumps, oil heater, hot gas bypass (optional), and alarm contact. The PSIO communicates with the LID, the SMM, and the optional 8-input modules for user interface and starter management.

ST ARTER MANAGEMENT MODULE (SMM) — This module is located within the starter cabinet. This module initiates PSIO commands for starter functions such as start/ stop of the compressor; start/stop of the condenser and chilled water pumps; start/stop of the tower fan, spare alarm contacts, and the shunt trip. The SMM monitors starter inputs such as ﬂow switches, line voltage, remote start contact, spare safety, condenser high pressure, oil pump interlock, motor current signal, starter 1M and run contacts, and the kW transducer input (optional). The SMM contains logic capable of safely shutting down the chiller if communication with the PSIO is lost.

LOCALINTERFACE DEVICE (LID) — The LID is mounted to the control center and allows the operator to interface with the PSIO or other CCN devices. It is the input center for all local chiller set points, schedules, set-up functions, and options. The LID has a STOP button, an alarm light, 4 buttons for logic inputs, and a display. The function of the 4 buttons or ‘‘softkeys’’ are menu driven and are shown on the display directly above the key.

SIX-PACK RELAY BOARD (6-Pack Relay Board) — This device is a cluster of 6 pilot relays located in the control center. It is energized by the PSIO for the compressor oil pump, oil heater, alarm, optional hot gas bypass relay, auxiliary oil pump.

EIGHT-INPUT (8-Input) MODULES — One optional module is factory installed in the control center panel when ordered. There can be up to 2 of these modules per chiller with 8 spare inputs each. They are used whenever chilled water reset, demand reset, or reading a spare sensor is required. The sensors or 4 to 20 mA signals are ﬁeld-installed.

The spare temperature sensors must have the same temperature/resistance curve as the other temperature sensors on this unit. These sensors are rated 5,000 ohm at 75 F (25 C).

FOUR-IN/TWO-OUT(4-IN/2-OUT) MODULE —Thismodule monitors and controls the external gear lubrication system. It energizes the gear oil pump and is located in the power panel.

OIL HEATER CONTACTOR (1C) — This contactor is located in the power panel and operates the heater at 115 v. It is controlled by the PIC to maintain oil temperature during chiller shutdown.

COMPRESSOR OILPUMP CONTACTOR(2C)ANDGEAR OIL PUMP CONTACTOR (5C) — These contactors are located in the power panel. They operate all 200 to 575-v oil pumps. The PIC energizes the contactor to turn on the oil pumps as necessary.

HOT GAS BYPASS CONTACTOR RELAY (3C) (Optional) — This relay, located in the power panel, controls the opening of the hot gas bypass valve. The PIC energizes the relay during low load, high lift conditions.

OIL AUXILIARY RELAY (4C) — This relay opens the oil cooler solenoid valve and interlocks the oil pump with the compressor (special order).

CONTROL TRANSFORMERS (T1-T4) — These transformers are located in the power panel and convert

incoming control voltage to either 21 vac power for the PSIO module and options modules, or 24 vac power for 3 power panel contactor relays and a control solenoid valve.

CONTROL AND OIL HEATER VOLTAGE SELECTOR (S1) — It is necessary to use 115 v incoming control power in the power panel. The switch must be set to the 115-v position.

OIL DIFFERENTIAL PRESSURE/POWER SUPPLY MODULE — This module, which is located in the control center, provides 5 vdc power for the transducers and LID backlight. This module outputs the difference between two pressure transducer input signals. The module subtracts oil supply pressure from transmission sump pressure and outputs the difference as an oil differentialpressure signal to the PSIO. The PSIO converts this signal to differential oil pressure. To calibrate this reading, refer to the Troubleshooting, Checking Pressure Transducers section on page 84.

LID Operation and Menus (Fig. 11-17)

GENERAL

• The LID display automatically reverts to the default screen (Fig. 11) after 15 minutes if no softkey activity takes place and if the chiller is not in PUMPDOWN mode

• When not displaying the default screen, the upper righthand corner of the LID displays the name of the screen that you have entered (Fig. 12).

• The LID may be conﬁgured in English or SI units, through the LID conﬁguration screen.

• Local Operation — Pressing the LOCAL the PIC in LOCAL operation mode, and the control ac-

cepts modiﬁcation to programming from the LID only. The PIC uses the Local Time Schedule to determine chiller start and stop times.

• CCN Operation — Pressing the CCN softkey places the PIC in the CCN operation mode, and the control accepts

modiﬁcations from any CCN interface or module (with the proper authority), as well as the LID. The PIC uses the CCN time schedule to determine start and stop times.

Fig. 11 — LID Default Screen

ALARMS AND ALERTS — An alarm (*) or alert (!) status is indicated on the default screen and the status tables. An alarm (*) shuts down the compressor. An alert (!) notiﬁes the operator that an unusual condition has occurred. The chiller continues to operate when an alert is shown.

Alarms are indicated when the control center alarm light (!) ﬂashes. The primary alarm message is viewed on the default screen and an additional, secondary, message and troubleshooting information are sent to the ALARM HISTORY table.

softkey places

NOTE: When an alarm is detected, the LID default screen freezes (stops updating) at the time of alarm. The freeze enables the operator to view the chiller conditions at the time of the alarm. The status tables show the updated informa-

tion. Once all alarms have been cleared (by pressing the

RESET

softkey), the default LID screen returns to normal

operation.

Fig. 12 — LID Service Screen

LID DEFAULT SCREEN MENU ITEMS — To perform any of the operations described below, the PIC must be powered up and have successfully completed its self test.

The default screen menu selection offers four options (STATUS, SCHEDULE, SETPOINT, and SERVICE). The STATUS menu allows viewing and limited calibration/ modiﬁcation of control points and sensors, relays and contacts, and the options board. The SCHEDULE menu allows viewing and modiﬁcation of the Local Control, CCN Control, and Ice Build time schedules. Numerous set points including Base Demand Limit, LCW, ECW, and Ice Build can be adjusted under the SETPOINT menu. The SERVICE menu can be used to revise alarm history, control test, control algorithm status, equipment conﬁguration, equipment service, time and date, attach to network, log out of device, controller identiﬁcation, and LID conﬁgurations. Figures 15 and 16 provide additional information on the menu structure.

Press the MENU

softkey to select from the 4 options. To view or change parameters within any menu structure, use the SELECT

softkey to choose the desired table or

item. The softkey modiﬁcation choices displayed will depend on whether the selected item is a discrete point, analog point, or an override point. Press the softkey that corresponds to your conﬁguration selection or press the

QUIT softkey. If the QUIT softkey is depressed, the

conﬁguration will not be modiﬁed. Use the following softkeys to access and select the desired section.

MENU STRUCTURE — To perform any of the operations described below, the PIC must be powered up and have successfully completed its self test.

• Press MENU

to select from the four available options.

• Press NEXT or PREVIOUS to highlight the desired entry.

• Press SELECT to access the highlighted point.

• Press QUIT to leave the selected decision or ﬁeld without saving any changes.

• Or, press ENTER to leave the selected decision or ﬁeld and save changes.

TOVIEWOR CHANGE POINT STATUS (Fig. 13) — Point Status is the actual value of all of the temperatures, pressures, relays, and actuators sensed and controlled by the PIC.

1. On the Menu screen, press STATUS

to view the list of

Point Status tables.

2. Press NEXT or PREVIOUS to highlight the desired

status table. The list of tables is:

• STATUS01 — Status of control points and sensors

• STATUS02 — Status of relays and contacts

• STATUS03 — Status of both optional 8-input modules and sensors

• STATUS04 — Gear oil temperature and pressure

• Press the softkey that corresponds to the desired menu structure.

Fig. 13 — Example of Point Status Screen

(Status01)

3. Press SELECT to view the desired Point Status table.

4. On the Point Status table press NEXT or PREVIOUS

until desired point is displayed on the screen.

Override Indication — An override value is indicated by ‘ ‘SUPVSR,’’‘‘SERVC,’’or ‘‘BEST’’ ﬂashing next to the point value on the Status table.

TO VIEW OR CHANGE TIME SCHEDULE OPERATION (Fig. 14)

1. On the Menu screen, press SCHEDULE

For Discrete Points — Press START or STOP ,

or NO ,ONor OFF , etc. to select the desired

YES

state.

For Analog Points — Press INCREASE or

DECREASE

to select the desired value.

5. Press ENTER to register new value.

OVERRIDE OPERATIONS NOTE: When overriding or changing metric values, it is nec-

essary to hold the softkey down for a few seconds in order to see a value change, especially on kilopascal values.

To Remove an Override

1. On the Point Status table press NEXT or PREVIOUS

to highlight the desired point.

2. Press NEXT or PREVIOUS to highlight one of the following schedules.

OCCPC01S — LOCAL Time Schedule OCCPC02S — ICE BUILD Time Schedule OCCPC03-99S — CCN Time Schedule (Actual

number is deﬁned in CONFIG table.)

3. Press SELECT to access and view the time schedule.

4. Press NEXT or PREVIOUS to highlight the desired period or override that you wish to change.

5. Press SELECT to access the highlighted period or override.

2. Press SELECT to access the highlighted point.

3. Press RELEASE to remove the override and return the point to the PIC’s automatic control.

Fig. 14 — Example of Time Schedule

Operation Screen

CCN

Start Chiller In CCN Control

Start Chiller In Local Control

DEFAULT SCREEN

LOCAL RESET

(SOFTKEYS)

Clear Alarms

START

INCREASE

ENABLE

STATUS

List the Status Tables

STATUS STATUS STATUS STATUS

STOP RELEASE

DECREASE

DISABLE

SCHEDULE SETPOINT

01 02 03 04

SELECT

RELEASE

Access Main Menu

SERVICE

EXIT

ENTER

(SELECT A T ABLE) (SELECT A POINT

ON THE TABLE) (MODIFY A

DISCRETE POINT) or (MODIFY AN

ANALOG POINT) or (MODIFY CONTROL

OPTIONS)

Select a Schedule

Select a Time Period/Override

Modify a Schedule Time

INCREASE

Add/Eliminate a Day

ENABLE

123

List the Schedules

OCCPC01S - Local Time Schedule OCCPC02S - Ice Build Time Schedule OCCPC03S-99S - CCN Time Schedule

(ENTER A 4-DIGIT PASSWORD)

Select the Setpoint

Modify the Setpoint

1 2 3 4 5 6 7 8

Override

SELECT

ENTER

DECREASE

DISABLE

Display the Setpoint Table

INCREASE

•

Base Demand Limit

•

LCW Setpoint

•

ECW Setpoint

•

Ice Build Setpoint

DECREASE

EXIT

(ANALOG VALUES)

(DISCRETE VALUES)

List the Service Tables

SELECT

QUIT

EXIT

ENTER

Select a Service Table

Fig. 15 — 17EX LID Menu Structure

• ALARM HISTORY

• CONTROL TEST

• CONTROL ALGORITHM STATUS

• EQUIPMENT CONFIGURATION

• EQUIPMENT SERVICE

• TIME AND DATE

• ATTACH TO NETWORK DEVICE

• LOG OUT OF DEVICE

• CONTROLLER IDENTIFICATION

• LID CONFIGURATION

SEE FIGURE 16

SELECT

EXIT

SERVICE TABLE

ALARM HISTORY

CONTROL TEST

CONTROL ALGORITHM STA TUS

List the Control Algorithm Status Tables

MAINT01 (Capacity Control) MAINT02 (Override Status) MAINT03 (Surge/HGBP Status) MAINT04 (Lead/Lag Status) WSMDEFME (Water System Manager Control Status) OCCDEFM (Time Schedule Status)

SELECT

Display Alarm History

(The table holds up to 25 alarms and alerts with the last alarm at the top of the screen.)

EXIT

List the Control Tests

Select a Test

• Automated T est

• PSIO Thermistors

• Options Thermistor

• Transducers

• Guide Vane Actuator

• Pumps

• Discrete Outputs

• Pumpdown Lockout

• Terminated Lockout

• FX Gear Oil Pump I/O

SELECT

EXIT

Select a Table:

OCCDEFM (Time Schedule Status)

Data Select Table

EQUIPMENT CONFIGURATION List the Equipment Configuration Tables

OCCPC01S (Local Status) OCCPC02S (CCN, ICE BUILD Status) OCCPC03S (CCN Status)

SELECT

EXIT

MAINT01 (Capacity Control Algorithm) MAINT02 (Override Status)\ MAINT03 (Surge/HGBP Status) MAINT04 (LEAD/LAG Status) WSMDEFM2 (Water System Manager Control Status)

EXIT

Maintenance T able Data

• CONFIG

• LEAD/LAG

• OCCDEFCS

• HOLIDEF

• BRODEF

• WSMALMDF

• ALARMDEF

• CONS_DEF

• RUNT_DEF

Select a Table

SELECT

EXIT

CONTINUED ON NEXT PAGE

Select a Parameter

Modify a Parameter

INCREASE

ENABLE

YES

DECREASE

DISABLE

Fig. 16 — 17EX Service Menu Structure

SELECT

QUIT QUIT QUIT

EXIT

ENTER ENTER ENTER

(ANALOG VALUES)

(DISCRETE VALUES)

SERVICE MENU CONTINUED FROM PREVIOUS PAGE

EQUIPMENT SERVICE (See Table 2, Examples 8, 9, and 10)

Service Tables: (See Note)

• SERVICE1

• SERVICE2

• SERVICE3

Select a Service Table

Select a Service Table Parameter

Modify a Service Table Parameter

INCREASE

ENABLE

TIME AND DATE

ATTACH TO NETWORK DEVICE

Select a Device

Modify Device Address

INCREASE

• Use to attach LID to another CCN network or device

• Attach to "LOCAL" to enter this machine

• To upload new tables

DECREASE

DISABLE

YES

List Network Devices

• Local

• Device 1

• Device 2

• Device 3

• Device 4

• Device 5

DECREASE

SELECT

QUIT QUIT QUIT

• Device 6

• Device 7

• Device 8

• Device 9

SELECT

ENTER

EXIT

ENTER ENTER ENTER

ATTACH

EXIT

(ANALOG VALUES) (DISCRETE VALUES) (DISCRETE VALUES)

Display Time and Date Table:

• To Modify — Time — Day of Week

INCREASE

DECREASE

— Date — Holiday Today

ENTER

EXIT

LOG OUT OF DEVICE

CONTROLLER IDENTIFICATION PSIO Controller

Identification Table

INCREASE

• To modify — PSIO CCN Address • To View — PSIO Software Version

LID CONFIGURATION

DECREASE

LEGEND

CCN — Carrier Comfort Network HGBP — Hot Gas Bypass LID — Local Interface Device

NOTE: SERVICE TABLES:

SERVICE1: — Capacity Override

— Type of Chilled Medium — Alert Temperature — Flow Veriﬁcation — Deadband — Recycle Restart Time — Surge/HGBP Operation — Motor Voltage, RLA, and Frequency — Starter Type — Condenser Freeze Safety — Soft Stop Conﬁguration — Start to Stop Timer — Gear Oil Pump Conﬁguration

ENTER

Default Screen

CCN

EXIT

(last 2 digits on part number indicate software version)

LID Configuration Table

INCREASE

• To Modify — LID CCN Address

LOCAL

DECREASE

— English or S.I. Metric Units — Password

RESET

ENTER

SERVICE2: — 8-input Modules

SERVICE3: — Proportional Inc each Band

— 20 mA Power Source

— Proportional Dec each Band — Proportional ECW Gain — Maximum Guide Vane Opening

EXIT

• To View — LID Software Version (last 2 digits of part number

indicate software version)

Fig. 16 — 17EX Service Menu Structure (cont)

6. a. Press INCREASE or DECREASE to change the time values. Override values are in one-hour incre-

ments, up to 4 hours.

b. Press ENABLE to select days in the day-of-week

ﬁelds. Press DISABLE

to eliminate days from the

period.

7. Press ENTER to register the values and to move horizontally (left to right) within a period.

8. Press EXIT to leave the period or override.

9. Either return to Step 4 to select another period or override, or press EXIT

again to leave the cur-

rent time schedule screen and save the changes.

4. Press SELECT to modify the highlighted set point.

5. Press INCREASE or DECREASE to change the selected set point value.

6. Press ENTER to save the changes and return to the previous screen.

10. Holiday Designation (HOLIDEF table) may be found in the Service Operation section, page 42.You must assign the month, day, and duration for the holiday.The Broadcast function in the BRODEF table also must be enabled for holiday periods to function.

TO VIEW AND CHANGE SET POINTS (Fig. 17)

1. To view the Set Point table, at the Menu screen press

SETPOINT

2. There are 4 set points on this screen: Base Demand Limit;

LCW Set Point (leaving chilled water set point); ECW Set Point (entering chilled water set point); and ICE BUILD set point. Only one of the chilled water set points can be active at one time, and the type of set point is activated in the Service menu. ICE BUILD is also activated and conﬁgured in the Service menu.

3. Press NEXT or PREVIOUS to highlight the desired

set point entry.

Fig. 17 — Example of Set Point Screen

SERVICE OPERATION — To view the menu-driven programs available for Service Operation, see the Service Operation section, page 42. For examples of LID display screens, see Table 2.

LEGEND FOR TABLE 2 — LID DISPLAY DATA

CCN — Carrier Comfort Network CHWR — Chilled Water Return CHWS — Chilled Water Supply Compr — Compressor Dec — Decrease Ecw — Entering Chilled Water HGBP — Hot Gas Bypass Inc — Increase LCW — Leaving Chilled Water mA — Milliamps P—Pressure PIC — Product Integrated Controls Refrig — Refrigerant T—Temperature Temp — Temperature

Table 2 — LID Display Data

NOTES:

IMPORTANT: The following notes apply to all Table 2 examples.

1. Only 12 lines of information appear on the LID screen at any one time. Pressthe NEXT or to view items below or above the current screen. If you have a chiller with a backlit LID, press the NEXT forward; press the PREVIOUS

2. Toaccess the information shown in Examples 6 through 14, enter your 4-digit password after pressing the SERVICE

softkeys arepressed for 15 minutes, the LIDautomatically logs off (to prevent unrestricted access to PIC controls) and reverts to the default screen. If this happens, you must reenter your password to access the tables shown in Examples 6 through 14.

3. Termsin the Description column of these tables are listed as they appear on the LID screen.

4. The LID may be conﬁgured in English or Metric (SI) units using theLIDCONFIGURATIONscreen. See the ServiceOperation section, page 42, for instructions on making this change.

To access this display from the LID default screen:

1. Press MENU

2. Press STATUS

3. Press SELECT

or PREVIOUS softkey to highlightapoint

softkey twice to page

softkey twice to page back.

softkey.If no

EXAMPLE1—STATUS01 DISPLAY SCREEN

. (STATUS01 will be highlighted).

5. The items in the Reference Point Name column

the LID screen

Building Supervisor software. They are listed in these tables as a convenience to the operator if it is necessary to cross reference CCN/BS documentation or use CCN/BS programs. For more information, see the 17EX CCN literature.

6. Reference Point Names shown in these tables in all capital letters can be read by CCN and Building Supervisor software. Of these capitalized names, those preceded by an asterisk can also be changed (that is, written to) by the CCN, Building Supervisor software and the LID. Capitalized Reference Point Names preceded by two asterisks can be changed only from the LID. Reference Point Names in lower case type can be viewed by CCN or Building Supervisor software only by viewing the whole table.

7. Alarms and Alerts: An asterisk

screen

tion point in the far right ﬁeld of the LID screen indicates an alert state. The asterisk (or exclamation point) indicates that the value on that line has exceeded (or is approaching) a limit. For more information on alarms and alerts, see the Alarms and Alerts section, page 16.

. They are data or variable names used in CCN or

in the far right ﬁeld of a LID status

indicates that the chiller is in an alarm state; an exclama-

do not appear on

DESCRIPTION RANGE UNITS

Control Mode Reset.Off. Local. CCN MODE Run Status Timeout. Recycle. Startup. STATUS

Occupied ? No/Yes OCC Alarm State Normal/Alarm ALM *Chiller Start/Stop Stop/Start CHIL S S Base Demand Limit 40-100 % DLM *Active Demand Limit 40-100 % DEM LIM Compressor Motor Load 0-999 % CA L

Current 0-999 % CA P

Amps 0-9999 AMPS CA A *Target Guide Vane Pos 0-100 % GV TRG Actual Guide Vane Pos 0-100 % GV ACT Water/Brine: Setpoint 10-120 (–12.2-48.9) DEG F (DEG C) SP * Control Point 10-120 (–12.2-48.9) DEG F (DEG C) LCW STPT Entering Chilled Water –40-245 (–40-118) DEG F (DEG C) ECW Leaving Chilled Water –40-245 (–40-118) DEG F (DEG C) LCW Entering Condenser Water –40-245 (–40-118) DEG F (DEG C) ECDW Leaving Condenser Water –40-245 (–40-118) DEG F (DEG C) LCDW Evaporator Refrig Temp –40-245 (–40-118) DEG F (DEG C) ERT Evaporator Pressure –6.7-420 (–46-2896) PSI (kPa) ERP Condenser Refrig Temp –40-245 (–40-118) DEG F (DEG C) CRT Condenser Pressure –6.7-420 (–46-2896) PSI (kPa) CRP Discharge Temperature –40-245 (–40-118) DEG F (DEG C) CMPD Bearing Temperature –40-245 (–40-118) DEG F (DEG C) MTRB Motor Winding Temp† –40-245 (–40-118) DEG F (DEG C) MTRW Motor Winding Hi

Temp Cutout

Oil Sump Temperature –40-245 (–40-118) DEG F (DEG C) OILT Oil Pressure Transducer† –6.7-420 (–46-2896) PSI (kPa) OILP Oil Pressure** –6.7-420 (–46-2896) PSID (kPad) OILPD Line Voltage: Percent 0-999 % V P

*Remote Contacts Input Off/On REMCON Total Compressor Starts 0-65535 c starts Starts in 12 Hours 0-8 STARTS Compressor Ontime 0-500000.0 HOURS c hrs *Service Ontime 0-32767 HOURS S HRS *Compressor Motor kW 0-9999 kW CKW

†Information is applicable to hermetic chillers (19EX) only.

**Oil pressure is read directly from a differential pressure module on 17EX chillers. NOTE: values preceded by an asterisk (*) can be forced (changed by an operator) from the LID screen

or from another control device (such as a Carrier Comfort Network [CCN] terminal).

Actual 0-9999 VOLTS V A

Ramping. Running. Demand. Override. Shutdown. Abnormal. Pumpdown

Normal/Alarm MTRW

REFERENCE POINT NAME

(ALARM HISTORY)

EXAMPLE2—STATUS02 DISPLAY SCREEN

To access this display from the LID default screen:

1. Press MENU

2. Press STATUS

3. Scroll down to highlight STATUS02.

4. Press SELECT

Table 2 — LID Display Data (cont)

DESCRIPTION

Hot Gas Bypass Relay X OFF/ON HGBR *Chilled Water Pump X OFF/ON CHWP Chilled Water Flow X NO/YES EVFL *Condenser Water Pump X OFF/ON CDP Condenser Water Flow X NO/YES CDFL Compressor Start Relay X OFF/ON CMPR Compressor Start Contact X OPEN/CLOSED 1CR AUX Compressor Run Contact X OPEN/CLOSED RUN AUX Starter Fault Contact X OPEN/CLOSED STR FLT Pressure Trip Contact X OPEN/CLOSED PRS TRIP Single Cycle Dropout X NORMAL/ALARM V1 CYCLE Oil Pump Relay X OFF/ON OILR Oil Heater Relay X OFF/ON OILH Motor Cooling Relay† X OFF/ON MTRC Auxiliary Oil Pump Relay X OFF/ON AUXOILR *Tower Fan Relay X OFF/ON TFR Compr. Shunt Trip Relay X OFF/ON TRIPR Alarm Relay X NORMAL/ALARM ALM Spare Prot Limit Input X ALARM/NORMAL SPR PL

†Information is applicable to hermetic machines only. NOTE: values preceded by an asterisk (*) can be forced (changed by an operator) from the LID screen

or from another control device (such as a Carrier Comfort Network [CCN] terminal).

To access this display from the LID default screen:

1. Press MENU

2. Press STATUS

3. Scroll down to highlight STATUS03.

4. Press SELECT

POINT TYPE

INPUT OUTPUT

EXAMPLE3—STATUS03 DISPLAY SCREEN

UNITS

REFERENCE POINT NAME

(ALARM HISTORY)

DESCRIPTION RANGE UNITS

OPTIONS BOARD 1 *Demand Limit 4-20 mA 4-20 mA DEM OPT

*Temp Reset 4-20 mA 4-20 mA RES OPT *Common CHWS Sensor –40-245 (–40-118) DEG F (DEG C) CHWS *Common CHWR Sensor –40-245 (–40-118) DEG F (DEG C) CHWR *Remote Reset Sensor –40-245 (–40-118) DEG F (DEG C) R RESET *Temp Sensor — Spare 1 –40-245 (–40-118) DEG F (DEG C) SPARE1 *Temp Sensor — Spare 2 –40-245 (–40-118) DEG F (DEG C) SPARE2 *Temp Sensor — Spare 3 –40-245 (–40-118) DEG F (DEG C) SPARE3

OPTIONS BOARD 2 *4-20 mA — Spare 1 4-20 mA SPARE1 M

*4-20 mA — Spare 2 4-20 mA SPARE2 M *Temp Sensor — Spare 4 –40-245 (–40-118) DEG F (DEG C) SPARE4 *Temp Sensor — Spare 5 –40-245 (–40-118) DEG F (DEG C) SPARE5 *Temp Sensor — Spare 6 –40-245 (–40-118) DEG F (DEG C) SPARE6 *Temp Sensor — Spare 7 –40-245 (–40-118) DEG F (DEG C) SPARE7 *Temp Sensor — Spare 8 –40-245 (–40-118) DEG F (DEG C) SPARE8 *Temp Sensor — Spare 9 –40-245 (–40-118) DEG F (DEG C) SPARE9

NOTE: values preceded by an asterisk (*) can be forced (changed by an operator) from the LID screen or from another control device (such as a Carrier Comfort Network [CCN] terminal).

REFERENCE POINT NAME

(ALARM HISTORY)

EXAMPLE4—STATUS04 DISPLAY SCREEN

To access this display from the LID default screen:

1. Press MENU

2. Press STATUS

3. Scroll down to highlight STATUS04.

4. Press SELECT

Table 2 — LID Display Data (cont)

DESCRIPTION RANGE UNITS

Main Gear Oil Pump OFF/ON MAINPMP1 Auxiliary Gear Oil Pump OFF/ON AUXPMP2 Gear Oil Pressure −6.7 to 420 (−46 to 2896) psi (kPa) GEAROILP Gear Oil Temperature −40 to 245 (−40 to 118) DEG F (DEG C) GEAROILT

EXAMPLE 5 — SETPOINT DISPLAY SCREEN

To access this display from the LID default screen:

1. Press MENU

2. Press SETPOINT

DESCRIPTION CONFIGURABLE RANGE UNITS REFERENCE POINT NAME DEFAULT VALUE

Base Demand Limit 40-100 % DLM 100 LCW Setpoint 20-120 (–6.7-48.9) DEG F (DEG C) lcw sp ECW Setpoint 20-120 (–6.7-48.9) DEG F (DEG C) ecw sp 60.0 (15.6) ICE BUILD Setpoint 20- 60 (–6.7-15.6) DEG F (DEG C) ice sp

REFERENCE POINT NAME

(ALARM HISTORY)

50.0 (10.0)

40.0 ( 4.4)

Table 2 — LID Display Data (cont)

EXAMPLE 6 — CONFIGURATION (CONFIG) DISPLAY SCREEN

To access this display from the LID default screen:

1. Press MENU

2. Press SERVICE

3. Scroll down to highlight EQUIPMENT CONFIGURATION.

4. Press SELECT

5. Scroll down to highlight CONFIG.

6. Press SELECT

DESCRIPTION CONFIGURABLE RANGE UNITS REFERENCE POINT NAME DEFAULT VALUE

RESET TYPE 1 Degrees Reset at 20 mA –30-30 (–17-17) DEG F (DEG C) deg 20ma

RESET TYPE 2 Remote Temp (No Reset) –40-245 (–40-118) DEG F (DEG C) res rt1 Remote Temp (Full Reset) –40-245 (–40-118) DEG F (DEG C) res rt2 65 (18) Degrees Reset –30-30 (–17-17) DEG F (DEG C) res rt 10D(6D)

RESET TYPE 3 CHW Delta T (No Reset) 0-15 (0-8) DEG F (DEG C) restd 1 CHW Delta T (Full Reset) 0-15 (0-8) DEG F (DEG C) restd 2 0D(0D) Degrees Reset –30-30 (–17-17) DEG F (DEG C) deg chw 5D(3D)

Select/Enable Reset Type 0-3 res sel ECW CONTROL OPTION DISABLE/ENABLE ecw opt

Demand Limit At 20 mA 40-100 % dem 20ma 40 20 mA Demand Limit Option DISABLE/ENABLE dem sel DISABLE

Auto Restart Option DISABLE/ENABLE astart DISABLE Remote Contacts Option DISABLE/ENABLE r contact Temp Pulldown Deg/Min 2-10 tmp ramp

Load Pulldown %/Min 5-20 kw ramp 10 Select Ramp Type: 0/1 ramp opt 1

Temp=0,Load=1

Loadshed Group Number 0-99 ldsgrp 0 Loadshed Demand Delta 0-60 % ldsdelta 20 Maximum Loadshed Time 0-120 MIN maxldstm 60

CCN Occupancy Conﬁg:

Schedule Number 3-99 occpcxxe 3 Broadcast Option DISABLE/ENABLE occbrcst DISABLE

ICE BUILD Option DISABLE/ENABLE ibopt DISABLE ICE BUILD TERMINATION

0 =Temp, 1 =Contacts, 2 =Both 0-2 ibterm 0

ICE BUILD Recycle Option DISABLE/ENABLE ibrecyc DISABLE

NOTE: D = delta degrees.

10D(6D) 85 (29)

10D(6D)

0 DISABLE

DISABLE 3

Table 2 — LID Display Data (cont)

EXAMPLE 7 — LEAD/LAG CONFIGURATION DISPLAY SCREEN

To access this display from the LID default screen:

1. Press MENU

2. Press SERVICE

3. Scroll down to highlight EQUIPMENT CONFIGURATION.

4. Press SELECT

5. Scroll down to highlight LEAD/LAG.

6. Press SELECT

DESCRIPTION CONFIGURABLE RANGE UNITS REFERENCE POINT NAME DEFAULT VALUE

LEAD/LAG SELECT

DISABLE =0, LEAD =1, LAG =2, STANDBY =3

Load Balance Option DISABLE/ENABLE loadbal DISABLE Common Sensor Option DISABLE/ENABLE commsens DISABLE LAG Percent Capacity 25-75 % lag per LAG Address 1-236 lag add LAG START Timer 2-60 MIN lagstart 10 LAG STOP Timer 2-60 MIN lagstop 10 PRESTART FAULT Timer 0-30 MIN preﬂt 5 STANDBY Chiller Option DISABLE/ENABLE stndopt DISABLE STANDBY Percent Capacity 25-75 % stnd per STANDBY Address 1-236 stnd add

LEAD/LAG CONFIGURATION SCREEN

0-3 leadlag 0

50 92

50 93

Table 2 — LID Display Data (cont)

EXAMPLE 8 — SERVICE1 DISPLAY SCREEN

To access this display from the LID default screen:

1. Press MENU

2. Press SERVICE

3. Scroll down to highlight EQUIPMENT SERVICE.

4. Press SELECT

5. Scroll down to highlight SERVICE1.

6. Press SELECT

DESCRIPTION CONFIGURABLE RANGE UNITS REFERENCE POINT NAME DEFAULT VALUE

Motor Temp Override* 150-200 (66-93) DEG F (DEG C) mt over Cond Press Override 90-200 (620-1379) PSI (kPa) cp over Refrig Override Delta T 2-5 (1-3) DEG F (DEG C) ref over 3D (1.6D) Chilled Medium Water/Brine medium WATER Brine Refrig Trippoint 8-40 (–13.3-4) DEG F (DEG C) br trip

Compr Discharge Alert 125-200 (52-93) DEG F (DEG C) cd alert Bearing Temp Alert 165-210 (74-99) DEG F (DEG C) tb alert 175 (79)

Water Flow Verify Time 0.5-5 MIN wﬂow t Oil Press Verify Time 15-300 SEC oilpr t 15

Water/Brine Deadband 0.5-2.0 (0.3-1.1) DEG F (DEG C) cw db Recycle Restart Delta T 2.0-10.0 (1.1-5.6) DEG F (DEG C) rcycrdt 5 (2.8) Recycle Shutdown Delta 0.5-4.0 (.27-2.2) rcycsdt 1.0 (0.6) Surge Limit/HGBP Option 0/1 srg hgbp Select: Surge=0, HGBP=1 Surge/HGBP Delta T1 0.5-15 (0.3-8.3) DEG F (DEG C) hgb dt1 Surge/HGBP Delta P1 30-170 (207-1172) PSI (kPa) hgb dp1 50 (345) Min. Load Points (T1/P1) Surge/HGBP Delta T2 0.5-15 (0.3-8.3) DEG F (DEG C) hgb dt2 Surge/HGBP Delta P2 30-170 (207-1172) PSI (kPa) hgb dp2 85 (586) Full Load Points (T2/P2) Surge/HGBP Deadband 1-3 (0.6-1.6) DEG F (DEG C) hgb dp

Surge Delta Percent Amps 10-50 % surge a Surge Time Period 1-5 MIN surge t 2

Demand Limit Source 0/1 dem src Select: Amps=0, Load=1 Amps Correction Factor 1-8 corfact 3 Motor Rated Load Amps 1-9999 AMPS a fs Motor Rated Line Voltage 1-9999 VOLTS v fs 460 Meter Rated Line kW 1-9999 kW kw fs 600

Line Frequency 0/1 HZ freq 0 Select: 0=60 Hz, 1=50 Hz

Compr Starter Type REDUCE/FULL starter REDUCE Condenser Freeze Point –20-35 (–28.9-1.7) DEG F (DEG C) cdfreeze 34 (1) Soft Stop Amps Threshold 40-100 % softstop 100 Stop to Start Timer 3-50 MIN stopmtr 20

External Gear Option ENABLE/DSABLE exg opt Mechanical Gear Oil Pump ENABLE/DSABLE mech pmp DSABLE Auxiliary Gear Oil Pump ENABLE/DSABLE aux pmp Gear Oil Pressure Alert 15-20 (103-138) PSI (kPa) gearp al 15 (103) Gear Oil Temperature Alert 130-145 (54-63) DEG F (DEG C) geart al 130 (54)

*Information is applicable to hermetic machines (19EX) only. NOTE: D = delta degrees.

200 (93) 125 (862)

33 (1) 200 (93)

1.0 (0.6)

1.5 (0.8)

10 (5.6)

1 (0.6) 25

200

ENABLE DSABLE

Table 2 — LID Display Data (cont)

EXAMPLE 9 — SERVICE2 DISPLAY SCREEN

To access this display from the LID default screen:

1. Press MENU

2. Press SERVICE

3. Scroll down to highlight EQUIPMENT SERVICE.

4. Press SELECT

5. Scroll down to highlight SERVICE2.

6. Press SELECT

OPTIONS BOARD 1 20 mA POWER CONFIGURATION

External = 0, Internal = 1 RESET 20 mA Power Source 0,1 res 20 ma

DEMAND 20 mA Power Source 0,1 dem 20 ma 0 SPARE ALERT ENABLE

Disable = 0, 1 = High Alert, 2 = Low Alert, 3 = High Alarm, 4 = Low Alarm Temp = Alert Threshold

CHWS Temp Enable 0-4 chws en CHWS Temp Alert –40-245 (–40-118) DEG F (DEG C) chws al 245 (118) CHWR Temp Enable 0-4 chwr en 0 CHWR Temp Alert –40-245 (–40-118) DEG F (DEG C) chwr al Reset Temp Enable 0-4 rres en 0 Reset Temp Alert –40-245 (–40-118) DEG F (DEG C) rres al 245 (118) Spare Temp 1 Enable 0-4 spr1 en Spare Temp 1 Alert –40-245 (–40-118) DEG F (DEG C) spr1 al 245 (118) Spare Temp 2 Enable 0-4 spr2 en 0 Spare Temp 2 Alert –40-245 (–40-118) DEG F (DEG C) spr2 al Spare Temp 3 Enable 0-4 spr3 en 0 Spare Temp 3 Alert –40-245 (–40-118) DEG F (DEG C) spr3 al

OPTIONS BOARD 2 20 mA POWER CONFIGURATION

External = 0, Internal = 1 SPARE 1 20 mA Power Source 0,1 sp1 20 ma SPARE 2 20 mA Power Source 0,1 sp2 20 ma 0

SPARE ALERT ENABLE Disable = 0, 1 = High Alert, 2 = Low Alert, 3 = High Alarm, 4 = Low Alarm Temp = Alert Threshold

Spare Temp 4 Enable 0-4 spr4 en Spare Temp 4 Alert –40-245 (–40-118) DEG F (DEG C) spr4 al 245 (118) Spare Temp 5 Enable 0-4 spr5 en 0 Spare Temp 5 Alert –40-245 (–40-118) DEG F (DEG C) spr5 al Spare Temp 6 Enable 0-4 spr6 en 0 Spare Temp 6 Alert –40-245 (–40-118) DEG F (DEG C) spr6 al Spare Temp 7 Enable 0-4 spr7 en 0 Spare Temp 7 Alert –40-245 (–40-118) DEG F (DEG C) spr7 al 245 (118) Spare Temp 8 Enable 0-4 spr8 en Spare Temp 8 Alert –40-245 (–0-118) DEG F (DEG C) spr8 al 245 (118) Spare Temp 9 Enable 0-4 spr9 en 0 Spare Temp 9 Alert –40-245 (–40-118) DEG F (DEG C) spr9 al

NOTE: This screen provides the means to generate alert messages based on exceeding the ‘‘Temp’’threshold for each point listed. If the ‘‘Enable’’ is set to 1, a value above the ‘‘Temp’’ threshold generates an alert message. If the ‘‘Enable’’ is set to 2, a value below the ‘‘Temp Alert’’ threshold generates an alert message. If the ‘‘Enable’’ is set to 0, alert generation is disabled. If the ‘‘Enable’’ is set to 3, a value above the ‘‘Temp’’ threshold generates an alarm. If the ‘‘Enable’’ is set to 4, a value below the ‘‘Temp’’ threshold generates an alarm.

DESCRIPTION CONFIGURABLE RANGE UNITS REFERENCE POINT NAME DEFAULT VALUE

245 (118)

245 (118) 245 (118)

245 (118)

EXAMPLE 10 — SERVICE3 DISPLAY SCREEN

To access this display from the LID default screen:

1. Press MENU

2. Press SERVICE

3. Scroll down to highlight EQUIPMENT SERVICE.

4. Press SELECT

5. Scroll down to highlight SERVICE3.

DESCRIPTION CONFIGURABLE RANGE UNITS REFERENCE POINT NAME DEFAULT VALUE

Proportional Inc Band 2-10 gv inc Proportional Dec Band 2-10 gv de 6.0 Proportional ECW Gain 1-3 gv ecw 2.0

Guide Vane Travel Limit 30-100 % gv lim

6.5

Table 2 — LID Display Data (cont)

EXAMPLE 11 — MAINTENANCE (MAINT01) DISPLAY SCREEN

To access this display from the LID default screen:

1. Press MENU

2. Press SERVICE

3. Scroll down to highlight CONTROL ALGORITHM STATUS.

4. Press SELECT

5. Scroll down to highlight MAINT01.

DESCRIPTION RANGE/STATUS UNITS REFERENCE POINT NAME

CAPACITY CONTROL Control Point 10-120 (–12.2-48.9) DEG F (DEG C) ctrlpt Leaving Chilled Water –40-245 (–40-118) DEG F (DEG C) LCW Entering Chilled Water –40-245 (–40-118) DEG F (DEG C) ECW Control Point Error –99-99 (–55-55) DEG F (DEG C) cperr ECW Delta T –99-99 (–55-55) DEG F (DEG C) ecwdt ECW Reset –99-99 (–55-55) DEG F (DEG C) ecwres LCW Reset –99-99 (–55-55) DEG F (DEG C) lcwres Total Error + Resets –99-99 (–55-55) DEG F (DEG C) error Guide Vane Delta –2-2 % gvd Target Guide Vane Pos 0-100 % GV TRG Actual Guide Vane Pos 0-100 % GV ACT

Proportional Inc Band 2-10 gv inc Proportional Dec Band 2-10 gv dec Proportional ECW Gain 1-3 gv ecw Water/Brine Deadband 0.5-2 (0.3-1.1) DEG F (DEG C) cwdb

NOTE: Overriding is not supported on this maintenance screen.Active overrides show the associated point in alert (*). Reference point names with capital letters can be read by CCN and Building Supervisor software.

EXAMPLE 12 — MAINTENANCE (MAINT02) DISPLAY SCREEN

To access this display from the LID default screen:

1. Press MENU

2. Press SERVICE

3. Scroll down to highlight CONTROL ALGORITHM STATUS.

4. Press SELECT

5. Scroll down to highlight MAINT02.

6. Press SELECT

OVERRIDE/ALERT STATUS MOTOR WINDING TEMP† –40-245 (–40-118) DEG F (DEG C) MTRW

Override Threshold 150-200 (66-93) DEG F (DEG C) mt over CONDENSER PRESSURE –6.7-420 (–42-2896) PSI (kPa) CRP Override Threshold 90-245 (621-1689) PSI (kPa) cp over EVAPORATOR REFRIG TEMP –40-245 (–40-118) DEG F (DEG C) ERT Override Threshold 2-45 (1-7.2) DEG F (DEG C) rt over DISCHARGE TEMPERATURE –40-245 (–40-118) DEG F (DEG C) CMPD Alert Threshold 125-200 (52-93) DEG F (DEG C) cd alert BEARING TEMPERATURE –40-245 (–40-118) DEG F (DEG C) MTRB Alert Threshold 175-185 (79-85) DEG F (DEG C) tb alert

†Information is applicable to hermetic machines (19EX) only. NOTE: Overriding is not supported on this maintenance screen.Active overrides show the associated point in alert (*). Reference point names with

capital letters can be read by CCN and Building Supervisor software.

DESCRIPTION RANGE/STATUS UNITS REFERENCE POINT NAME

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